Electronic spectra of Ce(III) and Pr(III) ions in molten alcali fluorides

A. A. Khokhryakov, A. O. Vershinin, A. S. Payvin, A. A. Lizin, A. G. Osipenko

ABSTRACT:

This article is devoted to the spectral research of Ce(III) and Pr(III) ions in molten alkali fluorides. Using spectral data a coordination conditions of Ce(III) and Pr(III) ions were estimated. It is proved that f → d transition split parameters of Ce(III) ions and hypersensitive 3H4 →3P₂ transition band shift of Pr(III) ion depend on the second coordination sphere compound of (Ln = Ce, Pr) complex groups.

KEYWORDS:

fluoride melts, electron spectroscopy, cerium ion, praseodymium ion, electronic spectra, REE ions